Transcript
for scene 14 of the video " Ice Age 2050s: Certainty 2" by Rolf Witzsche

Nobody had connected the two events

The 'earlier' connection between the weaker Sun of the Maunder Minimum, and the colder climates at the time, had been on record, and fully out in the open, back in the 1600s, but no one had seen the connection. Nobody had connected the two events then..